GENERAL MOTORS
DCS6984
URGENT - DISTRIBUTE IMMEDIATELY
Date:

August 16, 2024

Subject: REVISION: N242439340-01 – Customer Satisfaction Program
Front Electric Drive Units Did Not Pass Testing
Revised Parts Section
Models: 2024 Chevrolet Silverado EV
2024 GMC HUMMER EV Pickup
2024 GMC HUMMER EV SUV

This bulletin has been revised to update the front electric drive module part
number, and add front wheel drive shaft part numbers to the parts tables.
Please discard all previous copies of bulletin N242439340.

END OF MESSAGE

Customer Satisfaction Program
N242439340 Front Electric Drive Units Did Not Pass Testing
Release Date:
Revision Description:

Attention:

August 2024

Revision:

01

This bulletin has been revised to update the front electric drive module part number, and
add front wheel drive shaft part numbers to the parts tables. Please discard all previous
copies of bulletin N242439340.

The repairs outlined in this bulletin must only be completed at an authorized EV dealer and repairs
must be performed by a technician who has successfully completed the applicable technical training
required to perform this repair.
This program is in effect until May 31, 2026.

Make
Chevrolet
GMC
GMC

Model
Silverado EV
HUMMER EV Pickup
HUMMER EV SUV

Model Year
From
To
2024

RPO

Description

2024

Involved vehicles are marked “Open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition
Correction

On certain 2024 model year Chevrolet Silverado EV, and GMC HUMMER EV Pickup and HUMMER EV
SUV vehicles, the front electric drive unit may not have passed the end of line test.
Dealers are to replace the front electric drive transmission module and reprogram the drive motor control
module.

Parts (Hummer EV)
Quantity
1
2
2
2
2
2
2
2
2
13
2
As Required
(Up to 3.85
qt)
As Required
(Up to 3.65 L)
As Required
(Up to 22.19
qt)
As Required
(Up to 21 L)

Part Name
MODULE ASM-FRT ELEC DRV TRANSAXLE
SHAFT ASM-FRT WHL DRV HALF
SHAFT ASM-FRT WHL DRV HALF
SEAL,A/C CMPR HOSE (25.12OD X 17.03 ID) (SLIMLINE WASHER,3/4")
SEAL, A/C CMPR & CNDSR HOSE (SLIMLINE WASHER,1/2")
SEAL, A/C EVPR INL TUBE (SLIMLINE WASHER,3/8")
RING-OUTPUT SHF RET
SEAL-OUTPUT SHF (O RING)
BOLT, DRV MOT MT (M12X1.75X110)
BOLT,DRV MOT RR MT (M12X1.75X60)
PLUG, TRANS FLUID DRN (M12X1.75X14,6 INT)
TRANSMISSION FLUID

Part No.
24058311
85034815*
85084403*
13579646
13579648
13579649
24048716
24041753
11610916
11609605
11602943
19352619 (US)

TRANSMISSION FLUID

19352620 (CA)

COOLANT

12378390 (US)

COOLANT

10953456 (CA)

Note: * Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which Front Wheel Drive Shaft to order.
For the Drive Units (Remedy Parts) – For U.S. and Canada:
TAC Restriction:
The Drive Units required for this program are on restriction through the GM Technical Assistance Center (TAC). Please
contact TAC at telephone number US 1-877-446-8227 (Action Center prompt) or Canada 1-800-263-7740 for English or
1-800-263-7960 for French.
Reminder: Parts may be removed from SPRINT and Retail Inventory Management (RIM) and be nonreturnable. Dealers should review the affected parts to confirm RIM managed status. Parts may have quantity limiters

Copyright 2024 General Motors. All Rights Reserved.

Page 1 of 7

Customer Satisfaction Program
N242439340 Front Electric Drive Units Did Not Pass Testing
in effect. Due to the limited initial parts availability, dealers are encouraged not to order these parts for use as
shelf stock.
Parts (Silverado EV)
Quantity
1
2
2
2
2
1
2
2
13
2
2
As Required
(Up to 3.85
qt)
As Required
(Up to 3.65 L)
As Required
(Up to 22.76
qt)
As Required
(Up to
21.54 L)

Part Name
MODULE ASM-FRT ELEC DRV TRANSAXLE
SHAFT ASM-FRT WHL DRV HALF
SHAFT ASM-FRT WHL DRV HALF
SHAFT ASM-FRT WHL DRV HALF
SEAL,A/C CMPR HOSE (25.12OD X 17.03 ID) (SLIMLINE WASHER,3/4")
SEAL, A/C CMPR HOSE (SLIMLINE WASHER,1/2")
RING-OUTPUT SHF RET
SEAL-OUTPUT SHF (O RING)
BOLT,DRV MOT RR MT (M12X1.75X60)
BOLT, DRV MOT MT (M12X1.75X110)
PLUG, TRANS FLUID DRN (M12X1.75X14,6 INT)
TRANSMISSION FLUID

Part No.
24058311
85034815*
85084403*
85034818*
13579646
13579648
24048716
24041753
11609605
11610916
11602943
19352619 (US)

TRANSMISSION FLUID

19352620 (CA)

COOLANT

12378390 (US)

COOLANT

10953456 (CA)

Note: Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which Front Wheel Drive Shaft to order.
For the Drive Units (Remedy Parts) – For U.S. and Canada:
TAC Restriction:
The Drive Units required for this program are on restriction through the GM Technical Assistance Center (TAC). Please
contact TAC at telephone number US 1-877-446-8227 (Action Center prompt) or Canada 1-800-263-7740 for English or
1-800-263-7960 for French.
Reminder: Parts may be removed from SPRINT and Retail Inventory Management (RIM) and be nonreturnable. Dealers should review the affected parts to confirm RIM managed status. Parts may have quantity limiters
in effect. Due to the limited initial parts availability, dealers are encouraged not to order these parts for use as
shelf stock.
Warranty Information
Labor
Operation
9107182
9107183

Description
Replace Front Electric Drive Transmission Module (Hummer EV)
(includes reprogramming with SPS)
ADD: Recover and Recharge Refrigerant
Replace Front Electric Drive Transmission Module (Silverado EV)
(includes reprogramming with SPS)
ADD: Recover and Recharge Refrigerant

Labor
Time
12.9
1.2
15.0
1.2

Trans.
Type

Net
Item

ZFAT

N/A

ZFAT

N/A

Service Procedure
Important: When replacing the Front Electric Transaxle with Part Number 24058311, you will have to also replace the
Front Wheel Drive Shafts with the updated design that interfaces with the 3 Point Snap Ring.
1.

Replace the Front Electric Drive Transmission Module. Refer to Front Electric Drive Transmission Module
Replacement in SI.
Important:

* To avoid warranty transaction rejections, carefully read and follow the instructions below:

Page 2 of 7

Customer Satisfaction Program
N242439340 Front Electric Drive Units Did Not Pass Testing

6125814

•

The Warranty Claim Code from the programming event must be accurately entered in the “Warranty Claim
Code” field of the transaction.

•

When more than one Warranty Claim Code is generated for a programming event, it is required to document all
Warranty Claim Codes in the “Correction” field on the job card. Dealers must also enter one of the codes in the
“Warranty Claim Code” field of the transaction, otherwise the transaction will reject. It is best practice to enter
the FINAL code provided by SPS2.

Warranty Claim Code Information Retrieval

6125774

If the Warranty Claim Code was not recorded on the Job Card, the code can be retrieved in the SPS2 system as
follows:
1.
2.
3.
4.

Open TLC on the computer used to program the vehicle.
Select and start SPS2.
Select Settings (1).
Select the Warranty Claim Code tab (2).

The VIN, Warranty Claim Code and Date/Time will be listed on a roster of recent programming events. If the code is
retrievable, dealers should resubmit the transaction making sure to include the code in the SPS Warranty Claim Code
field.
Note: Carefully read and follow the instructions below.

•

Ensure the programming tool is equipped with the latest software and is securely connected to the data link
connector. If there is an interruption during programming, programming failure or control module damage may
occur.

•

Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will
interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to
Page 3 of 7

Customer Satisfaction Program
N242439340 Front Electric Drive Units Did Not Pass Testing

•
•

www.gmdesolutions.com for further information. If not available, connect a fully charged 12 V jumper or booster
pack disconnected from the AC voltage supply. DO NOT connect a battery charger.
Follow the on-screen prompts regarding ignition power mode, but ensure that anything that drains excessive power
(exterior lights, HVAC blower motor, etc) is off.
Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M)
system status indicators to NO.

Important: The service technician always needs to verify that the VIN displayed in the TLC left side drop down menu
and the top center window match the VIN plate of the vehicle to be programmed prior to using Service Programming
System 2 (SPS2) for programming or reprogramming a module.

•

For the TLC application, service technicians need to always ensure that the power mode (ignition) is “ON” before
reading the VIN from the vehicle’s VIN master module and that they do not select a VIN that is already in the TLC
application memory from a previous vehicle.

•

If the VIN that shows up in the TLC top center window after correctly reading the VIN from the vehicle does not
match the VIN plate of the vehicle, manually type in the VIN characters from the vehicle VIN plate into the TLC top
center window and use these for programming or reprogramming the subject module with the correct vehicle VIN
and software and/or calibrations.

•

The Engine Control Module (ECM) is the master module (for VIP vehicles) that TLC reads to determine the VIN of
the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the ECM also
needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.

•

The Body Control Module (BCM) is the master module (for GEM vehicles) that TLC reads to determine the VIN of
the vehicle. If the VIN read from the vehicle by TLC does not match the VIN plate of the vehicle, the BCM also
needs to be reprogrammed with the correct VIN, software and calibrations that match the vehicle’s VIN plate.

Caution: Be sure the VIN selected in the drop down menu (1) is the same as the vehicle connected (2) before
beginning programming.

5743643

Important: If the vehicle VIN DOES NOT match, the message below will be shown.

5877000

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Customer Satisfaction Program
N242439340 Front Electric Drive Units Did Not Pass Testing

5644477

Important: Techline Connect screens shown above.
Important: If the same calibration/software warning is noted on the TLC Summary screen, select OK and follow
screen instructions. After a successful programming event, the WCC is located in the Service Programming System
dialogue box of the SPS Summary screen. No further action is required. Refer to the Warranty section of the
bulletin.
2.

Reprogram the Drive Motor Control Module. Refer to K107 Drive Motor Control Module: Programming and Setup in
SI.

5644478

Note: The screenshot above is an example of module programming and may not be indicative of the specific
module that is being programmed. Module selection and VIN information have been blacked out.
Important: To avoid warranty transaction rejections, you MUST record the warranty claim code provided on the
Warranty Claim Code (WCC) screen shown above on the job card. Refer to callout 1 above for the location of the
WCC on the screen.
3.

Record SPS Warranty Claim Code on job card for warranty transaction submission.

Dealer Responsibility
All new, used, GM Certified Pre-Owned (CPO), courtesy transportation vehicles, dealer shuttle vehicles, CarBravo, etc.
in dealers' possession and subject to this field action must be held and inspected/repaired per the service procedure of
this bulletin before customers take possession of these vehicles. Involved vehicles must be held and not delivered to
customers, dealer-traded, released to auction, used for demonstration, or any other purpose.
All GM Certified Pre-Owned (CPO) vehicles currently in the dealers’ inventory within the SHIFT Digital system will be
de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting an accepted/paid
warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified for sale within
the SHIFT Digital system, or once again be used in the Courtesy Transportation Program.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through May 31, 2026. Customers who have recently purchased vehicles sold from your vehicle inventory,
and for which there is no customer information indicated on the involved vehicle listing, are to be contacted by the dealer.
Page 5 of 7

Customer Satisfaction Program
N242439340 Front Electric Drive Units Did Not Pass Testing
Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A
copy of the customer letter is provided in this bulletin for your use in contacting customers. Program follow-up cards
should not be used for this purpose, since the customer may not as yet have received the notification letter.
In summary, whenever a vehicle subject to this program enters your vehicle inventory or is in your facility for service
through May 31, 2026, you must take the steps necessary to be sure the program correction has been made before
selling or releasing the vehicle.
Dealer Reports
For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis
Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that
apply to this field action. This information is intended to assist dealers with the PROMPT COMPLETION of these
vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration
Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete
this field action may be a violation of law in several states.
Courtesy Transportation
Courtesy transportation is available for customers whose vehicles are involved in a product program and still within the
warranty coverage period. See General Motors Service Policies and Procedures Manual for courtesy transportation
program details.
Customer Notification
General Motors will notify customers of this program on their vehicle (see copy of customer letter included with this
bulletin).

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of
conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained
technicians have the tools, equipment, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT
assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your dealer for information on whether
your vehicle may benefit from the information.

We Support Voluntary
Technician Certification

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Customer Satisfaction Program
N242439340 Front Electric Drive Units Did Not Pass Testing
May 2024
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that on your 2024 model year Chevrolet Silverado EV, GMC HUMMER EV Pickup or HUMMER EV
SUV vehicle, the front electric drive unit may not have passed the end of line test.
Your satisfaction with your Silverado EV, HUMMER EV Pickup or HUMMER EV SUV is very important to us, so we are
announcing a program to prevent this condition or, if it has occurred, to fix it.
What We Will Do: Your GM dealer replace the front electric drive transmission module and reprogram the drive motor
control module. This service will be performed for you at no charge until May 31, 2026. After that, any applicable
warranty will apply.
What You Should Do: To limit any possible inconvenience, we recommend that you contact your dealer as soon as
possible to schedule an appointment for this repair. By scheduling an appointment, your dealer can ensure that the
necessary parts will be available on your scheduled appointment date. When scheduling your appointment, confirm with
the dealer that they are an EV certified dealer.
If you have any questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer
Assistance Center at the number listed below.
For the hearing or speech impaired, please contact our Customer Assistance Center using the Telecommunication
Relay Service by dialing 711 then providing the appropriate Customer Assistance Center number for your vehicle.
Division
Chevrolet Silverado EV
GMC HUMMER EV/SUV
Puerto Rico – English
Puerto Rico – Español
Virgin Islands

Number
1-833-EVCHEVY
(1-833-382-4389)
1-833-HUMMER-EV
(1-833-486-6373)
1-866-467-9700
1-866-467-9700
1-866-467-9700

Text Telephones (TTY)
711 / 1-800-833-2438
711 / 1-800-833-2438

We truly appreciate you taking the time to remedy your vehicle as we know your time is valuable. We want you to know
that we will do our best, throughout your ownership experience, to ensure that your GM vehicle provides you many
miles of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N242439340

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